Higher June 2018 Paper 2 Q12

EdexcelCurrent spec2 marksDirect & Inverse Proportion

12

Four sketch graphs of y against x: Graph A a curve rising from O and levelling off, Graph B a straight line through O, Graph C a curve decreasing towards the x-axis, Graph D a curve rising more and more steeply from O

The graphs of \(y\) against \(x\) represent four different types of proportionality.

Match each type of proportionality in the table to the correct graph. (2)

Type of proportionalityGraph letter
\(y \propto x\)
\(y \propto x^2\)
\(y \propto \sqrt{x}\)
\(y \propto \dfrac{1}{x}\)
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